21492857 is an odd 8-digits composite number following 21492856
and preceding 21492858 . In scientific notation, it is written as 2.1492857 × 10^7.
The sum of its digits is 38. It has a total of 3 prime factors and 8 positive divisors.
There are 19649952 positive integers (up to 21492857) that are relatively prime to 21492857.
21492857 has 8 divisors, whose sum is 22676160
The reverse of 21492857 is 75829412
Previous prime number is 551
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2
Name
twenty-one million four hundred ninety-two thousand eight hundred fifty-seven
Scientific notation
2.1492857 × 10^7
Engineering notation
2.1492857 × 10^6
Prime Factorization
19 × 551 × 2053
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21492857
Product of the distinct prime numbers
The prime factorization of 21492857 is 19 × 551 × 2053.
Since it has a total of 3 prime factors.
1 , 5 , 72 , 18 , 575 , 604 , 2581 , 2513 , 26052 , 2178 , 70151 , 683214 , 9490408 , 4581428 , 22590706 , 78172341 , 865461288 , 54725015 , 3830280390 , 714719836
n×2
42985714
n×3
64478571
n×4
85971428
n×5
107464285
n÷2
10746428.5
n÷3
7164285.6666667
n÷3
5373214.25
n÷5
4298571.4
n2
461942902022449
n3
9.9284727353335E+21
n4
2.1339124472892E+29
n5
4.5863875080107E+36
2 √n
4636.0389342627
3 √n
278.03409084544
4 √n
68.088464032189
5 √n
29.272433619615
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21492856
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21492857 can be divided by 8 positive divisors.
The sum of these divisors (counting 21492857) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001111111010001111001
3
Ternary
1111102221122202
4
Quaternary
1101333101321
5
Quinary
21000232412
6
Senary
2044355545
8
Octal
121772171
10
Decimal
21492857
12
Duodecimal
7245bb5
16
Hexadecimal
147f479
20
Vigesimal
6e6c2h
36
Base36
csnzt
md5
9dd2b04acb20c961bcfaadd7a0a3a053
sha1
044953b2d2ae077ae445f8e5fa29f2bdf597ea1f
sha256
e430dea4c70e09d69bfd4646cf63af0b8c26b7b6264c42048fe3d5aa27bdeab6
sha512
c8b22c54a4e85b4ab240571cdef96ab70afc44fa5b73ca18d397f5742cd113bef281959f0e895a5b387323267b12df45583b53aed0ecd0060c7ab3511dcf9c82
ripemd-160
82fb57e32b739ecf9376dbcec0df7fbb118b9838
Diameter
42985714
Circumference
135043603.31171
Area
1.4512364273717E+15
Volume
4.1588289342254E+22
Surface area
5.8049457094867E+15
Circumference
135043603.31171
Perimeter
85971428
Area
461942902022449
Diagonal
30395489.863546
Surface area
2771657412134694
Volume
9.9284727353335E+21
Space diagonal
37226720.323812
Perimeter
64478571
Area
2.0002714412467E+14
Altitude
18613360.161906
Surface area
2.0002714412467E+14
Volume
1.1700817329967E+21
Height
10131829.954515